Current location - Training Enrollment Network - Mathematics courses - Four math problems (urgent) (directly write the answers to the first three questions) followed by (column calculation)
Four math problems (urgent) (directly write the answers to the first three questions) followed by (column calculation)
(Write the answer directly) 1, 7/9=(7) divided by (9) = (14)/18 = 21divided by (27).

(Write the answer directly) 2. A cuboid with a square bottom and a height of 20CM is exactly square when the side is unfolded. The surface area of this cuboid is (450 square centimeters) and the volume is (500 cubic centimeters).

4*5*20+2*5*5=

(Write the answer directly) 3. When three identical cubes are put together to form a cuboid, the surface area of the cuboid is 140 cm2, and the original surface area of each cuboid is (60 cm2).

6*( 140/ 14)

(column calculation) 4. Party A and Party B were originally from 46 yuan. Party A spent 12 yuan on story books and Party B spent 18 yuan on science books. At this time, the money left by the two people is just equal. How much money do A and B have?

After Party A and Party B buy books, there is still 46-12-18 =16 yuan left.

Because the money left by the two people is equal, each person has 16/2=8 yuan.

So A originally had 12+8=20 yuan.

B Originally 18+8=26 yuan.

A: A originally had 20 yuan, and B originally had 26 yuan.